Slot machine



FIG. 1 is a front elevational view of the slot machine showing our new design;

FIG. 2 is a left side elevational view thereof with the right side elevational view being identical;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is an enlarged front elevational view thereof. 

The ornamental design for a slot machine, as shown and described. 